Fix content-type header case sensitivity (#9961)

api/core/workflow/nodes/http_request/entities.py

@@ -94,7 +94,7 @@ class Response:
     @property
     def is_file(self):
         content_type = self.content_type
-        content_disposition = self.response.headers.get("Content-Disposition", "")
+        content_disposition = self.response.headers.get("content-disposition", "")
 
         return "attachment" in content_disposition or (
             not any(non_file in content_type for non_file in NON_FILE_CONTENT_TYPES)
@@ -103,7 +103,7 @@ class Response:
 
     @property
     def content_type(self) -> str:
-        return self.headers.get("Content-Type", "")
+        return self.headers.get("content-type", "")
 
     @property
     def text(self) -> str:

api/core/workflow/nodes/http_request/node.py

@@ -142,10 +142,11 @@ class HttpRequestNode(BaseNode[HttpRequestNodeData]):
         Extract files from response
         """
         files = []
+        is_file = response.is_file
         content_type = response.content_type
         content = response.content
 
-        if content_type:
+        if is_file and content_type:
             # extract filename from url
             filename = path.basename(url)
             # extract extension if possible